My 10 gallon tank has been up for a few weeks. I added cured live rock a couple weeks ago. I assume when I have my water tested this week it will be cycled. Assuming it is cycled, I am going to be getting my first critter for my first salt water tank. I feel like when I brought my kids home from the hospital the first time: Excited but scared to death I am going to screw something up.

I am going to be getting an emerald crab first. I have never done drip acclimating before but will do a test run tomorrow for my weekly water change. I have done a fair amount of reading but now that I am ready to actually get the crab I am getting nervous about having missed some big thing that I am supposed to do.

Is there anything that I need to know about emerald crabs that wouldn't be covered by googling about them?

Inverts should wait at-least a month after adding your first fish , this will allow time for food to build , remember new tanks have no food source it starts with the first fish being fed and waist is dis burst creating a food source,

As SniperHank said, they are opportunists and they will eat whatever they can get. I had one get my pygmy angel while it was asleep.

I agree , but if it was fed properly it wouldn't go after fish , wouldn't you rather feed it than let it go after your fish ,
I keep a lobster he's got to be 8x the size of a crab , he can choose any fish he wanted as he's also a opportunist , he don't why is that he gets fed so he has no reason to go after fish ,

now like I said above in post 4 if there is no food in the tank the crab will starve , it can't be a opportunist if there's no food to eat